lib.mEoS.He

Fluid info

• CAS Number: 7440-59-7

• Formula: He

• Synonym: R-704

• Molecular weigth: 4.002602 g/mol

• Tc: 5.1953 K

• Pc: 0.2276 MPa

• ρc: 69.6000 kg/m³

• Tt: 2.1768 K

• Tb: 4.2226 K

• Acentric factor: -0.385

• Dipole moment: 0.0 Debye

Equation of state

• Ortiz-Vega, D.O.; A New Wide Range Equation of State for Helium-4. Doctoral Dissertation, Texas A&M University (2013), http://dx.doi.org/1969.1/151301

• McCarty, R.D., Arp, V.D.; A New Wide Range Equation of State for Helium. Adv. Cryo. Eng., 35:1465-1475, 1990, http://dx.doi.org/10.1007/978-1-4613-0639-9_174

• McCarty, R.D., Arp, V.D.; A New Wide Range Equation of State for Helium. Adv. Cryo. Eng., 35:1465-1475, 1990, http://dx.doi.org/10.1007/978-1-4613-0639-9_174

• Kunz, O., Wagner, W.; The GERG-2008 Wide-Range Equation of State for Natural Gases and Other Mixtures: An Expansion of GERG-2004. J. Chem.Eng. Data 57(11) (2012) 3032-3091, http://dx.doi.org/10.1021/je300655b

Viscosity

• McCarty, R.D.; Thermophysical Properties of Helium-4 from 2 to 1500 K with Pressures to 1000 MPa. NIST Technical Note 631 (1972)

Thermal Conductivity

• Hands, B.A., Arp, V.D.; A Correlation of Thermal Conductivity Data for Helium. Cryogenics, 21(12) (1981) 697-703, http://dx.doi.org/10.1016/0011-2275(81)90211-3

• McCarty, R.D.; Thermophysical Properties of Helium-4 from 2 to 1500 K with Pressures to 1000 MPa. NIST Technical Note 631 (1972)

Calculation example

Using the first option for equation of state, we can get this diagram plots with the liquid-gas saturation region:

The diagram is generated with this module running with the compound name as parameter or edited in file

python3 plotMEoS.py He